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E60 M5 (2006 - 2010)

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  #1  
Old 12-16-2013, 05:03 PM
08M5V10 08M5V10 is offline
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Warming up the car at a cold startup...

I have heard in the past to warm up the M5 e60 when you start up the vehicle. After research I found the following from the owners manual:
"Do not allow the engine to warm up by leaving it running while the vehicle remains stationary. Instead, begin to drive immediately at a moder- ate engine speed."
Anyone know the reasoning behind this? Very curious....


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  #2  
Old 12-16-2013, 05:10 PM
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Keepittrill Keepittrill is offline
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Warming up the car at a cold startup...

No idea, but that's what it says in my manual too. I'm kinda curious as well.


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  #3  
Old 12-18-2013, 02:16 PM
DocsV10 DocsV10 is offline
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Quote:
Originally Posted by 08M5V10 View Post
I have heard in the past to warm up the M5 e60 when you start up the vehicle. After research I found the following from the owners manual:
"Do not allow the engine to warm up by leaving it running while the vehicle remains stationary. Instead, begin to drive immediately at a moder- ate engine speed."
Anyone know the reasoning behind this? Very curious....


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Doesn't make sense to me, but I follow what the manual says. There must be a reason/explanation behind it.
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  #4  
Old 12-18-2013, 02:24 PM
codog2 codog2 is offline
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Warming up the car at a cold startup...

Car will warm up quicker driving conservatively than letting it idle to warm up. More efficient at normal operating temp


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  #5  
Old 01-07-2014, 12:29 AM
jrsnider92 jrsnider92 is offline
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I was just about to start a new thread on
this topic, until i saw this. I have the same question. I'm afraid it's going to hurt the engine. Just doesn't seem right to me to just start driving right away...
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  #6  
Old 01-09-2014, 03:41 PM
TTCarrera TTCarrera is offline
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The manual for every Porsche & BMW I've owned in the last 40 years says the same thing. Sitting there idling, with no load on the motor while it warms up, and metal parts expanding & re-seating, is very not good.

Owners manuals have good stuff in them, written by people who built the car. Good idea to listen.
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  #7  
Old 01-09-2014, 04:09 PM
jrsnider92 jrsnider92 is offline
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That makes sense, thank you for explaining!!


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  #8  
Old 01-15-2014, 05:14 AM
Camride Camride is offline
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The quicker you warm up the engine, the S85 in particular, the better. The general consensus that I've read is to take off and start driving almost immediately but keep the rpm's below 4k. The bearing clearance on these engines is very tight and if you're running the originally recommended 10x60 it's a very thick oil, the quicker you can get it up to temp the better.
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  #9  
Old 01-20-2014, 07:00 PM
Erock_Zone Erock_Zone is offline
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I've noticed the redline on the tach moves up as the car warms. Looks like it is watching out for itself while you drive around and it warms up.


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  #10  
Old 01-20-2014, 07:01 PM
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Originally Posted by Erock_Zone View Post
I've noticed the redline on the tach moves up as the car warms. Looks like it is watching out for itself while you drive around and it warms up.


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Yep!


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  #11  
Old 02-03-2014, 10:20 AM
SchrickM5 SchrickM5 is offline
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I think if you let the car idle from col start you get warm spots, or areas with varying temp, with the car running perhaps the fluids get pumped around thus giving a more even temp across the block.
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  #12  
Old 02-03-2014, 10:40 AM
luigi524td luigi524td is offline
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Warm up by driving moderately - HOGWASH!!
Your car will warm up more quickly at 0 degrees or colder if you put a brick on the accelerator pedal and run it at redline for 5-10 minutes
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  #13  
Old 03-30-2014, 01:21 AM
mtechniksa mtechniksa is offline
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Runs rich at startup fries the cats driving helps bring the cat to optimum temp m5 cats fail all the time


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  #14  
Old 04-02-2014, 08:02 AM
Frisco1 Frisco1 is offline
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10 to 15 seconds to allow for oil pressure build up. All vehicles..except RACE motors that require preheated oil at 180* degrees.
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  #15  
Old 04-04-2014, 06:03 AM
Hooch33 Hooch33 is offline
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Quote:
Originally Posted by TTCarrera View Post
The manual for every Porsche & BMW I've owned in the last 40 years says the same thing. Sitting there idling, with no load on the motor while it warms up, and metal parts expanding & re-seating, is very not good.

Owners manuals have good stuff in them, written by people who built the car. Good idea to listen.
Interesting, maybe that's why every post in this forum starts with "help my car is broken" lol
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  #16  
Old 05-06-2014, 03:38 PM
White94RX White94RX is offline
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Quote:
Originally Posted by Frisco1 View Post
10 to 15 seconds to allow for oil pressure build up. All vehicles..except RACE motors that require preheated oil at 180* degrees.
This is what I do. I crank it up, let it idle for 20 seconds or so, then drive away and drive moderately till warmed up. The 525 I just crank and immediately drive away. But still drive moderately of course till warmed

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  #17  
Old 05-06-2014, 03:44 PM
Squiddie Squiddie is online now
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Quote:
Originally Posted by 08M5V10 View Post
I have heard in the past to warm up the M5 e60 when you start up the vehicle. After research I found the following from the owners manual:
"Do not allow the engine to warm up by leaving it running while the vehicle remains stationary. Instead, begin to drive immediately at a moder- ate engine speed."
Anyone know the reasoning behind this? Very curious....
When there is load it produces more energy per revolution. Much more as idling is very optimized to do as little as possible. So the number of revolutions while it is really cold is much higher is you warm up idle.
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  #18  
Old 05-06-2014, 05:49 PM
jrsnider92 jrsnider92 is offline
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Since this thread started, I have been following these instructions, and now after the car sits over night I get this really weird rough idle for a second or two, rpm DONT drop, it stays below 1,000 on initial start, and it makes this chugging sound then the rpm spike to 1,300 where the rough idle stops and then it slowly falls back down to below 1,000 again. After that every sounds great, and I'm not referring to the "diesel" sound these cars make on cold starts, I'm aware of this phenomenon. Anyone have or had this issue? I just hit 37000 miles and I am due to replace the spark plugs, but I can't imagine that being the issue.


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  #19  
Old 05-07-2014, 10:02 AM
Blackland Blackland is offline
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My sales guy said to start it, wait until the RPMs drop from 1500 to 1000, then drive it.
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  #20  
Old 06-03-2014, 12:22 AM
Leekay07 Leekay07 is online now
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The reason behind it is most cars have mechanical oil pumps. Running at 5-700 rpm is not optimal for the oil pump. Also Its to to EPA. Car emissions are lower RPM are greatly increased because the fuel does not get burned off as efficiently at lower temps.


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